🔐 Python Login & Signup System (Tkinter)

A simple Login & Signup GUI Application built with Python (Tkinter).
Users can create accounts and log in with stored credentials. Data is saved locally in a text file.

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🚀 Features

• User Sign Up with username & password
• User Login authentication
• Data stored in datasheet.txt (using dictionary format)
• GUI built with Tkinter
• Error handling for invalid logins and password mismatch

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📂 Project Structure

login
├── images
│   ├── exist-user.png
│   ├── invalid-user.png
│   ├── login.png
│   ├── password-not-match.png
│   ├── sign-in-page.png
│   ├── sign-up-page.png
│   └── signup.png
└── LogInPage.py

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🖼️ Demo

1. Sign In Page

2. Existing User

3. Invalid User

4. Sign Up Page

5. Password Mismatch

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⚙️ How to Run

1. Clone the repo:

   git clone https://github.com/abdulrahman-elhanafy/Python-Login-System.git
   cd Python-Login-System

2. Run the app:

   python login.py

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🛠️ Tech Stack

• Python
• Tkinter (for GUI)
• AST (for safe string-to-dict conversion)

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📌 Notes

• All user credentials are stored in plain text (datasheet.txt).
• For production apps, consider using hashed passwords and a real database.

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🤝 Contributing

This is a beginner-friendly project 🎉. Feel free to:

• ⭐ Star this repo if you like it
• 🍴 Fork it and improve the code
• 🔄 Open a Pull Request with new features or fixes